EP0899934A1 - Anpassungsschaltung Für Versorgungspannung - Google Patents

Anpassungsschaltung Für Versorgungspannung Download PDF

Info

Publication number
EP0899934A1
EP0899934A1 EP98202831A EP98202831A EP0899934A1 EP 0899934 A1 EP0899934 A1 EP 0899934A1 EP 98202831 A EP98202831 A EP 98202831A EP 98202831 A EP98202831 A EP 98202831A EP 0899934 A1 EP0899934 A1 EP 0899934A1
Authority
EP
European Patent Office
Prior art keywords
terminal
output
voltage
intended
value
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP98202831A
Other languages
English (en)
French (fr)
Inventor
Fernand Courtois
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips Electronics NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Koninklijke Philips Electronics NV filed Critical Koninklijke Philips Electronics NV
Publication of EP0899934A1 publication Critical patent/EP0899934A1/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/08—Current supply arrangements for telephone systems with current supply sources at the substations

Definitions

  • Such a circuit is often used to generate a regulated voltage to power other electronic components, which then constitute the load of the adapter circuit, within a telephone set.
  • the energy used to generate the voltage regulated in this case comes from a telephone line to which is connected the device.
  • the device telephone itself is associated with an additional device, called device, such as an answering machine or a fax machine.
  • such a device receives the energy it receives. necessary from a mains supply and can therefore provide a more powerful source of power for the telephone device more efficient than the telephone line. It is therefore desirable to provide for the possibility of connecting the power source external supplied by the peripheral to the load supplied by the power adapter circuit.
  • the external power source provides an output voltage at a potential higher than the value regulating module, the latter will try to lower this potential, without however achieving it because it is then the source external power supply which imposes the potential of the output terminal of the circuit.
  • These attempts will, at best, cause waste considerable energy, and at worst, a collapse of the source external power supply due to very high consumption of energy that the regulation module will do for these vain ends corrective.
  • the object of the present invention is to remedy these disadvantages in proposing a voltage adapter circuit power supply whose regulation module is inhibited when the circuit output is connected to an external power source which imposes on said output a voltage whose value is greater than the nominal regulation value.
  • a power adapter circuit conforming to introductory paragraph is characterized, according to the invention, in that it is provided with means for adjusting the regulation value to the value of a voltage supplied by a voltage source external to the circuit adapter when said voltage source is connected to the load.
  • a circuit adapter is characterized in that the module regulation includes a capacity connected between the line terminal and the potential reference terminal, and a transistor provided with a terminal polarization connected to the output of the comparison module, a reference terminal, and a transfer terminal, transistor whose main current path, defined as the junction between the transfer terminal and the reference terminal, is connected in parallel with said ability.
  • This advantageous embodiment of the regulation module by its simplicity, allows stabilization of the output voltage thanks to the memory effect due to capacity.
  • the value of the output voltage i.e. the voltage present across the capacity
  • this excess is detected by the comparison module whose output controls the setting in conduction of the transistor of the regulation module.
  • This causes a partial discharge of capacity across the current path main of the transistor.
  • the output of the comparison module switches again and interrupts the conduction of the transistor. The capacity can therefore start to charge again, since it is connected to the line terminal, until the next exceeding, which will cause the reproduction of the cycle described above.
  • a supply voltage adapter circuit is characterized in that that it further comprises a measurement module, intended to deliver on an output a signal representative of the value of a current called output which crosses the circuit output terminal, and a divider bridge tension consisting of at least a first and a second resistance connected in series between the line terminal and the potential reference, and having a node between them intermediary connected to the first input of the comparison module, and in that the regulation module is provided with injection means, activated by the output of the measurement module when the output current flows from outside to inside the circuit, to inject a current in that of the resistors of the divider bridge which separates the line terminal of the first input of the comparison module.
  • the measurement module detects the presence of an external voltage source connected to the charging and discharging a voltage having a value greater than the value nominal regulation, when the output current flows from outside to inside of the circuit.
  • the means of injection are then put into action. These will carry out a value correction nominal regulation.
  • Current injection into that of resistors of the divider bridge which separates the line terminal from the first entry of the comparison module, in this case the first resistance has the effect of increasing the value of the voltage drop across said first resistance, and therefore to decrease the value of the voltage received by the comparison module on its first entry. This will require a higher output voltage to toggle the output of the comparison module and set action means of regulation.
  • the structure described above ensures automatically as the value of the total voltage drop across the terminals of the first resistance is such that the sum of this value and the predetermined voltage is equal to the value of the voltage delivered by the external voltage source, which is equivalent to configuring the adapter circuit so that the nominal regulation value becomes equal to the value of the voltage delivered by the source of external tension.
  • the injection means therefore receive from the module measures a signal to their commander to operate a current injection more significant, and therefore a larger correction, until an equilibrium is reached, i.e.
  • a supply voltage adapter circuit such as described above is characterized in that the injection means include a transistor whose bias input is connected to the output of the measurement module and whose main current path is connected between the first input of the comparison module and the potential reference terminal.
  • the injection means take a particularly easy form since they consist of a single transistor. This one receives on its entry of polarization a signal delivered by the measurement module, signal which is representative of the value of the output current.
  • the value of the current which travels the main current path of the transistor, which constitutes the current injected and therefore represents the magnitude of the correction made, is proportional to the value of the output signal of the measurement circuit, and therefore to the extent of the correction sought.
  • such a telephone device can, when paired with a peripheral device, use a voltage supply provided by the latter for the supply of certain of its internal electronic components, such as the micro-controller.
  • the RM regulation module includes a capacity C connected between the line terminal and the reference reference terminal potential VSS, and a transistor T1.
  • This transistor T1 is of the type bipolar NPN in this example, and has a collector constituting a transfer terminal, an emitter constituting a reference terminal and a base constituting a bias terminal, which is connected at the output of the OA comparison module.
  • the current path main of this transistor T1, defined as the junction between its collector and its transmitter, is connected in parallel with the capacity C.
  • the PSA voltage adapter circuit further includes a measurement module (R, SC), intended to deliver a signal to an output representative of the value of a so-called IR output current flowing through the PSA adapter circuit output terminal, and a divider bridge voltage consisting of a first and a second resistor R1 and R2, arranged in series between the line terminal and the VSS potential reference, thus presenting a node between them intermediate connected to the first input of the OA comparison module.
  • the RM regulation module is provided with injection means, activated by the output of the measurement module (R, SC) when the IR output current flows from the outside to the inside of the PSA adapter circuit, that is to say in a negative direction, opposite to that represented on the figure, to inject a current IT2 into the first resistor R1.
  • These injection means are constituted by a transistor T2, also of bipolar type NPN in this example, the base of which is connected to the output of the measurement module (R, SC) and whose current path main is connected between the first input of the module comparison OA and the potential reference terminal VSS.
  • this PSA voltage adapter circuit is as follows: in the absence of any external voltage source, the output voltage VDD is stabilized thanks to the memory effect due to the capacity C.
  • the value of the output voltage VDD that is to say the voltage present at the terminals of the capacitor C, by neglecting a possible drop in voltage at the terminals of the measurement module (R, SC), exceeds the nominal regulation value VregO equal at (R1 + R2) .Vref / R2 .
  • this overshoot is detected by the comparison module OA whose output controls the conduction of the transistor T1 of the regulation module. This causes a partial discharge of the capacitor C through the main current path of the transistor T1, which results in a collector-emitter current IT1.
  • Capacity C can therefore start to charge again, since it is connected to the line terminal, until the next overrun, which will cause the reproduction of the cycle described above.
  • the injection of a current IT2 into the first resistor R1 has the effect of increasing the value of the voltage drop VR1 across the terminals of said first resistor R1, and therefore of decreasing the value of the voltage received by the comparison module OA on its first entry.
  • a higher output voltage VDD will thus be required to switch the output of the comparison module and put the RM regulation module into action.
  • the output current IR remains negative.
  • This telephone apparatus further includes a circuit PSA power adapter as described above, connected between the DC terminals of the DB rectifier bridge, and whose output is connected to the positive power supply terminal of the microcontroller MC.
  • such a telephone device may, when paired with a device device, use a Vext supply voltage supplied by this last for feeding some of its components internal electronics, such as the MC microcontroller.
EP98202831A 1997-08-27 1998-08-24 Anpassungsschaltung Für Versorgungspannung Withdrawn EP0899934A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9710691A FR2767933A1 (fr) 1997-08-27 1997-08-27 Circuit adaptateur de tension d'alimentation
FR9710691 1997-08-27

Publications (1)

Publication Number Publication Date
EP0899934A1 true EP0899934A1 (de) 1999-03-03

Family

ID=9510528

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98202831A Withdrawn EP0899934A1 (de) 1997-08-27 1998-08-24 Anpassungsschaltung Für Versorgungspannung

Country Status (7)

Country Link
US (1) US6256385B1 (de)
EP (1) EP0899934A1 (de)
JP (1) JPH11167424A (de)
KR (1) KR19990023907A (de)
CN (1) CN1121778C (de)
CA (1) CA2245984A1 (de)
FR (1) FR2767933A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1148612A2 (de) * 2000-04-07 2001-10-24 Motorola, Inc. Stromabgriffspannungsregler mit inkorporierter Thermokurzschlussschutzsicherung
EP1852767A1 (de) * 2005-02-25 2007-11-07 Fujitsu Ltd. Shunt-regler und elektronische einrichtung

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4250634B2 (ja) * 2006-04-18 2009-04-08 キヤノン株式会社 データ通信装置、データ通信システム及びデータ通信方法
FR2931320B1 (fr) * 2008-05-13 2010-08-13 St Microelectronics Tours Sas Limitation de surtensions dans un convertisseur a decoupage
CN102749972A (zh) * 2011-04-20 2012-10-24 鸿富锦精密工业（深圳）有限公司 硬盘连接装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2538661A1 (fr) * 1982-12-28 1984-06-29 Thomson Csf Circuit electrique assurant les fonctions de base d'un poste telephonique d'abonne
DE3347765A1 (de) * 1983-04-27 1984-10-31 Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt Schaltungsanordnung zur leitungsspeisung von zusatzeinrichtungen eines fernsprechapparates
US4813072A (en) * 1985-09-13 1989-03-14 Telenorma Telefonbau Und Normalzeit Gmbh Switching device for power supply to additional accessories for a telephone
US4961222A (en) * 1986-05-06 1990-10-02 Telefonaktiebolaget L M Ericsson Apparatus in a telecommunication system for supplying power to a telephone set
GB2296581A (en) * 1994-12-22 1996-07-03 Motorola Inc Limited power systems

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4315207A (en) * 1980-06-20 1982-02-09 Advanced Micro Devices, Inc. Current controlled battery feed circuit
DE3341345A1 (de) * 1983-11-15 1985-05-23 SGS-ATES Deutschland Halbleiter-Bauelemente GmbH, 8018 Grafing Laengsspannungsregler
EP0173104B1 (de) * 1984-08-02 1993-05-12 Nec Corporation Energieversorgungsanordnung, bestehend aus einer Vielzahl von Energiequellen mit negativen Widerstandskarakteristiken
DE3541308C1 (en) * 1985-11-22 1987-02-05 Philips Patentverwaltung DC power supply generator e.g. for gas discharge lamp - obtains regulated DC from mains supply giving sinusoidal input to filter and rectifier
AU618651B2 (en) * 1989-02-02 1992-01-02 Alcatel Australia Limited Battery boosted dial memory
FR2645381B1 (fr) * 1989-04-04 1991-05-31 Radiotechnique Compelec Circuit de commande d'ecoute amplifiee
FR2651623A1 (fr) * 1989-09-01 1991-03-08 Radiotechnique Compelec Circuit integre presentant une detection d'etat de saturation.
JP3337079B2 (ja) * 1991-11-26 2002-10-21 ローム株式会社 電源回路
US5302889A (en) * 1992-06-19 1994-04-12 Honeywell Inc. Voltage regulator
JP2646969B2 (ja) * 1993-08-30 1997-08-27 日本電気株式会社 冗長構成電源回路
US5479090A (en) * 1993-11-24 1995-12-26 Raytheon Company Power converter having optimal dynamic operation
FR2739523A1 (fr) * 1995-09-29 1997-04-04 Philips Electronics Nv Circuit pour poste telephonique comportant une alimentation de diode electroluminescente
JP3688448B2 (ja) * 1997-10-02 2005-08-31 富士通株式会社 スイッチング電源装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2538661A1 (fr) * 1982-12-28 1984-06-29 Thomson Csf Circuit electrique assurant les fonctions de base d'un poste telephonique d'abonne
DE3347765A1 (de) * 1983-04-27 1984-10-31 Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt Schaltungsanordnung zur leitungsspeisung von zusatzeinrichtungen eines fernsprechapparates
US4813072A (en) * 1985-09-13 1989-03-14 Telenorma Telefonbau Und Normalzeit Gmbh Switching device for power supply to additional accessories for a telephone
US4961222A (en) * 1986-05-06 1990-10-02 Telefonaktiebolaget L M Ericsson Apparatus in a telecommunication system for supplying power to a telephone set
GB2296581A (en) * 1994-12-22 1996-07-03 Motorola Inc Limited power systems

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1148612A2 (de) * 2000-04-07 2001-10-24 Motorola, Inc. Stromabgriffspannungsregler mit inkorporierter Thermokurzschlussschutzsicherung
EP1148612A3 (de) * 2000-04-07 2003-11-19 Motorola, Inc. Stromabgriffspannungsregler mit inkorporierter Thermokurzschlussschutzsicherung
EP1852767A1 (de) * 2005-02-25 2007-11-07 Fujitsu Ltd. Shunt-regler und elektronische einrichtung
EP1852767A4 (de) * 2005-02-25 2008-05-07 Fujitsu Ltd Shunt-regler und elektronische einrichtung
US7586716B2 (en) 2005-02-25 2009-09-08 Fujitsu Limited Regulator with shunt over-current by-pass

Also Published As

Publication number Publication date
FR2767933A1 (fr) 1999-02-26
KR19990023907A (ko) 1999-03-25
CA2245984A1 (en) 1999-02-27
US6256385B1 (en) 2001-07-03
CN1212551A (zh) 1999-03-31
JPH11167424A (ja) 1999-06-22
CN1121778C (zh) 2003-09-17

Similar Documents

Publication Publication Date Title
EP0110775B1 (de) Regulierungseinrichtung mit kleiner Verlustspannung
EP0462023B1 (de) Statischer Schalter
FR2535870A1 (fr) Circuit d'alimentation en courant electrique d'un micro-ordinateur
FR2830091A1 (fr) Regulateur de tension incorporant une resistance de stabilisation et un circuit de limitation du courant de sortie
EP1083471A1 (de) Spannungsregler
WO2007083048A1 (fr) Commande d'un transistor mos
FR2724072A1 (fr) Etage amplificateur de puissance, de type suiveur.
FR2573257A1 (fr) Circuit de protection contre les coupures d'alimentation electrique
EP0899934A1 (de) Anpassungsschaltung Für Versorgungspannung
FR2750541A1 (fr) Chargeur de batterie destine a eviter un effet de memoire
EP0415503B1 (de) Integrierte Schaltung mit einer Feststellung des Sättigungszustandes
FR2490895A1 (fr) Circuit d'entretien pour oscillateur a faible consommation de courant
EP1010048B1 (de) Spannungsregelungsschaltung zur unterdrückung des latch-up phänomens
EP0021867B1 (de) Gegen Schwankungen der Eingangsspannung und der Ausgangsleistung geregelte Zerhacker-Spannungsversorgungsschaltung, insbesondere für Fernsehempfänger
EP0536011B1 (de) Steuerungs und Ausgangsschutzverfahren, insbesondere für eine programmierbare Steuerung
EP1603238A1 (de) Blockierschaltung mit Hysterese und niedriegem Stromverbrauch
EP0685917A1 (de) Abgesicherte Spannungsversorgung
EP0457397B1 (de) Schaltungsanordnung zur Regelung des Leitungsstroms in einem Telefonapparat
FR2758930A1 (fr) Circuit d'alimentation absorbant un courant constant et appareil telephonique mettant en oeuvre un tel circuit
EP1860924B1 (de) Näherungsschalter mit einem Timer
EP0391469A1 (de) Steuerschaltung für verstärktes Abhören
FR2474776A1 (fr) Appareil pour la charge d'une batterie rechargeable
FR2638585A1 (fr) Chargeur pour accumulateur cadmium-nickel
EP0133089A1 (de) Leistungssteuerschaltung für Gleichstrom mit Überlast- und Kurzschlussschutz
FR2810810A1 (fr) Dispositif d'alimentation d'un appareil electronique

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE ES FR GB IT

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 19990903

AKX Designation fees paid

Free format text: DE ES FR GB IT

17Q First examination report despatched

Effective date: 20040226

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20040708